XG2 Manual errors?

[N6JW]

I picked up a new XG2 mini-module from the friendly folk at the Elecraft
booth at the South-Western Division ARRL Convention here in Riverside CA,
this weekend.  I suppose I just need a building fix :-)

 

Unless I am missing something, there seems to be a couple of errors in the
manual.  I am only up to the second page, so I thought I would just check
with the group, before I ignore what I think are errors, and just press on
regardless.

 

The manual that came with the kit is Rev. D, dated September 6, 2005.  (The
on-line manual is still Rev. A, dated June 23, 2005, and is clearly an
earlier, less complete, version).

 

1. In the introduction it states that "A power-on LED (green) is
provided . . ." In fact, the LED is red as is correctly noted in the Parts
Inventory at the bottom of the page.  This is, of course, totally
inconsequential.
2. The fifth assembly step on page 2 calls for DMM resistance readings,
the last two of which just can't be right, if I understand the schematic at
all.  It is stated that the junction of C4 and R3 is supposed to read 57-63
k, but it simply reads open circuit. (Surely this is right?!, see schematic:
ONLY resis-ters have been soldered in at this point).  The same applies to
the reading one is supposed to get at the junction of U1 and R1-57-63k.  In
fact, this junction has no path to ground at this stage.  Incorrect readings
at these check points could be rather disconcerting to a novice or
inexperienced builder.

 

Comparing the XG1 manual with the XG2 manual suggests how this may have come
about: the latter manual was produced as a modification of the former one,
and some things slipped through that should not have.  Is this right?

 

Do I just keep going, or do I need my head read?

 

Thanks and 73

 

John, N6JW

K2/100 #3290

K1 #754

K1 #1642

 

P. S. The XG2 kit has fewer parts than the XG1 kit, but is $20 more
expensive.  I imagine it must be the extra two crystals and 3 position
mini-rotary switch.  As a point of interest, just what does it cost to get
fundamental frequency crystals like these made up, anyway?

 

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[Matt Osborn]

I didn't even notice the red/green LED, but I did notice the
resistance check at C4 & R3 and forgot to report it.

I came to the same conclusion that you did, the resistance check was
wrong, so I just continued.  The XG2 works fine. I compared with the
XG1 and have the same output levels.

The XG2 works fine
On Mon, 12 Sep 2005 23:05:46 -0700, "John Webster"
<[hidden email]> wrote:

>I picked up a new XG2 mini-module from the friendly folk at the Elecraft
>booth at the South-Western Division ARRL Convention here in Riverside CA,
>this weekend.  I suppose I just need a building fix :-)
>
>
>
>Unless I am missing something, there seems to be a couple of errors in the
>manual.  I am only up to the second page, so I thought I would just check
>with the group, before I ignore what I think are errors, and just press on
>regardless.
>
>
>
>The manual that came with the kit is Rev. D, dated September 6, 2005.  (The
>on-line manual is still Rev. A, dated June 23, 2005, and is clearly an
>earlier, less complete, version).
>
>
>
>1. In the introduction it states that "A power-on LED (green) is
>provided . . ." In fact, the LED is red as is correctly noted in the Parts
>Inventory at the bottom of the page.  This is, of course, totally
>inconsequential.
>2. The fifth assembly step on page 2 calls for DMM resistance readings,
>the last two of which just can't be right, if I understand the schematic at
>all.  It is stated that the junction of C4 and R3 is supposed to read 57-63
>k, but it simply reads open circuit. (Surely this is right?!, see schematic:
>ONLY resis-ters have been soldered in at this point).  The same applies to
>the reading one is supposed to get at the junction of U1 and R1-57-63k.  In
>fact, this junction has no path to ground at this stage.  Incorrect readings
>at these check points could be rather disconcerting to a novice or
>inexperienced builder.
>
>
>
>Comparing the XG1 manual with the XG2 manual suggests how this may have come
>about: the latter manual was produced as a modification of the former one,
>and some things slipped through that should not have.  Is this right?
>
>
>
>Do I just keep going, or do I need my head read?
>
>
>
>Thanks and 73
>
>
>
>John, N6JW
>
>K2/100 #3290
>
>K1 #754
>
>K1 #1642
>
>
>
>P. S. The XG2 kit has fewer parts than the XG1 kit, but is $20 more
>expensive.  I imagine it must be the extra two crystals and 3 position
>mini-rotary switch.  As a point of interest, just what does it cost to get
>fundamental frequency crystals like these made up, anyway?
>
>
>
>_______________________________________________
>Elecraft mailing list
>Post to: [hidden email]
>You must be a subscriber to post to the list.
>Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft   
>
>Help: http://mailman.qth.net/subscribers.htm
>Elecraft web page: http://www.elecraft.com

_______________________________________________
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Elecraft web page: http://www.elecraft.com